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https://github.com/ibm-s390-linux/s390-tools.git
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dfe8a4f803
Normally, `gcc` takes care of adding the `GNU_STACK` marking except for assembly code. Therefore, let's add the marking manually. Discard the `.note.GNU-stack` section in the linker script since it's just a "message" from the compiler to the linker. This fixes the linker warning: ld: warning: entry.o: missing .note.GNU-stack section implies executable stack Reviewed-by: Steffen Eiden <seiden@linux.ibm.com> Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
37 lines
826 B
ArmAsm
37 lines
826 B
ArmAsm
/*
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* Entry code for stage 3a and stage 3b boot loader
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*
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* Copyright IBM Corp. 2020
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#include "common_memory_layout.h"
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#include "boot/s390.h"
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#include "boot/sigp.h"
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.section .text.start
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.globl _start
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_start:
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/* Might be called after a diag308 so better set
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* architecture and addressing mode
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*/
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lhi %r1, 1
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sigp %r1, %r0, SIGP_SET_ARCHITECTURE
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sam64
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/* Initialize stack */
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basr %r13, 0
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.Lbase: llgf %r15, .Lstack - .Lbase(%r13)
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brasl %r14, initialize
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.Lstack: .long STACK_ADDRESS + STACK_SIZE - STACK_FRAME_OVERHEAD
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.previous
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/* The code doesn't require an executable stack */
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#if defined(__linux__) && defined(__ELF__)
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.section .note.GNU-stack,"",%progbits
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#endif
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